src/plugins/platforms/xcb/qxcbintegration.cpp

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  41
  42 #include "qxcbintegration.h"
  43 #include "qxcbconnection.h"
  44 #include "qxcbscreen.h"
  45 #include "qxcbwindow.h"
  46 #include "qxcbcursor.h"
  47 #include "qxcbkeyboard.h"
  48 #include "qxcbbackingstore.h"
  49 #include "qxcbnativeinterface.h"
  50 #include "qxcbclipboard.h"
  51 #include "qxcbdrag.h"
  52
  53 #include <xcb/xcb.h>
  54
  55 #include <QtPlatformSupport/private/qgenericunixeventdispatcher_p.h>
  56 #include <QtPlatformSupport/private/qgenericunixfontdatabase_p.h>
  57 #include <QtPlatformSupport/private/qgenericunixfontdatabase_p.h>
  58 #include <QtPlatformSupport/private/qgenericunixservices_p.h>
  59
  60 #include <stdio.h>
  61
  62 //this has to be included before egl, since egl pulls in X headers
  63 #include <QtGui/private/qguiapplication_p.h>
  64
  65 #ifdef XCB_USE_EGL
  66 #include <EGL/egl.h>
  67 #endif
  68
  69 #ifdef XCB_USE_XLIB
  70 #include <X11/Xlib.h>
  71 #endif
  72
  73 #include <qpa/qplatforminputcontextfactory_p.h>
  74 #include <private/qgenericunixthemes_p.h>
  75 #include <qpa/qplatforminputcontext.h>
  76
  77 #if defined(XCB_USE_GLX)
  78 #include "qglxintegration.h"
  79 #elif defined(XCB_USE_EGL)
  80 #include "qxcbeglsurface.h"
  81 #include <QtPlatformSupport/private/qeglplatformcontext_p.h>
  82 #endif
  83
  84 #include <QtGui/QOpenGLContext>
  85 #include <QtGui/QScreen>
  86 #ifndef QT_NO_ACCESSIBILITY
  87 #include <qpa/qplatformaccessibility.h>
  88 #endif
  89
  90 QT_BEGIN_NAMESPACE
  91
  92 QXcbIntegration::QXcbIntegration(const QStringList &parameters)
  93     : m_eventDispatcher(createUnixEventDispatcher()),
  94       m_services(new QGenericUnixServices)
  95 {
  96     QGuiApplicationPrivate::instance()->setEventDispatcher(m_eventDispatcher);
  97
  98 #ifdef XCB_USE_XLIB
  99     XInitThreads();
 100 #endif
 101     m_nativeInterface.reset(new QXcbNativeInterface);
 102
 103     m_connections << new QXcbConnection(m_nativeInterface.data());
 104
 105     for (int i = 0; i < parameters.size() - 1; i += 2) {
 106 #ifdef Q_XCB_DEBUG
 107         qDebug() << "QXcbIntegration: Connecting to additional display: " << parameters.at(i) << parameters.at(i+1);
 108 #endif
 109         QString display = parameters.at(i) + ':' + parameters.at(i+1);
 110         m_connections << new QXcbConnection(m_nativeInterface.data(), display.toLatin1().constData());
 111     }
 112
 113     foreach (QXcbConnection *connection, m_connections)
 114         foreach (QXcbScreen *screen, connection->screens())
 115             screenAdded(screen);
 116
 117     m_fontDatabase.reset(new QGenericUnixFontDatabase());
 118     m_inputContext.reset(QPlatformInputContextFactory::create());
 119 #ifndef QT_NO_ACCESSIBILITY
 120     m_accessibility.reset(new QPlatformAccessibility());
 121 #endif
 122 }
 123
 124 QXcbIntegration::~QXcbIntegration()
 125 {
 126     qDeleteAll(m_connections);
 127 }
 128
 129 QPlatformWindow *QXcbIntegration::createPlatformWindow(QWindow *window) const
 130 {
 131     return new QXcbWindow(window);
 132 }
 133
 134 #if defined(XCB_USE_EGL)
 135 class QEGLXcbPlatformContext : public QEGLPlatformContext
 136 {
 137 public:
 138     QEGLXcbPlatformContext(const QSurfaceFormat &glFormat, QPlatformOpenGLContext *share,
 139                            EGLDisplay display, QXcbConnection *c)
 140         : QEGLPlatformContext(glFormat, share, display)
 141         , m_connection(c)
 142     {
 143         Q_XCB_NOOP(m_connection);
 144     }
 145
 146     void swapBuffers(QPlatformSurface *surface)
 147     {
 148         Q_XCB_NOOP(m_connection);
 149         QEGLPlatformContext::swapBuffers(surface);
 150         Q_XCB_NOOP(m_connection);
 151     }
 152
 153     bool makeCurrent(QPlatformSurface *surface)
 154     {
 155         Q_XCB_NOOP(m_connection);
 156         bool ret = QEGLPlatformContext::makeCurrent(surface);
 157         Q_XCB_NOOP(m_connection);
 158         return ret;
 159     }
 160
 161     void doneCurrent()
 162     {
 163         Q_XCB_NOOP(m_connection);
 164         QEGLPlatformContext::doneCurrent();
 165         Q_XCB_NOOP(m_connection);
 166     }
 167
 168     EGLSurface eglSurfaceForPlatformSurface(QPlatformSurface *surface)
 169     {
 170         return static_cast<QXcbWindow *>(surface)->eglSurface()->surface();
 171     }
 172
 173 private:
 174     QXcbConnection *m_connection;
 175 };
 176 #endif
 177
 178 #ifndef QT_NO_OPENGL
 179 QPlatformOpenGLContext *QXcbIntegration::createPlatformOpenGLContext(QOpenGLContext *context) const
 180 {
 181     QXcbScreen *screen = static_cast<QXcbScreen *>(context->screen()->handle());
 182 #if defined(XCB_USE_GLX)
 183     return new QGLXContext(screen, context->format(), context->shareHandle());
 184 #elif defined(XCB_USE_EGL)
 185     return new QEGLXcbPlatformContext(context->format(), context->shareHandle(),
 186         screen->connection()->egl_display(), screen->connection());
 187 #elif defined(XCB_USE_DRI2)
 188     return new QDri2Context(context->format(), context->shareHandle());
 189 #endif
 190     qWarning("QXcbIntegration: Cannot create platform OpenGL context, none of GLX, EGL, or DRI2 are enabled");
 191     return 0;
 192 }
 193 #endif
 194
 195 QPlatformBackingStore *QXcbIntegration::createPlatformBackingStore(QWindow *window) const
 196 {
 197     return new QXcbBackingStore(window);
 198 }
 199
 200 bool QXcbIntegration::hasCapability(QPlatformIntegration::Capability cap) const
 201 {
 202     switch (cap) {
 203     case ThreadedPixmaps: return true;
 204     case OpenGL: return true;
 205     case ThreadedOpenGL: return false;
 206     case WindowMasks: return true;
 207     default: return QPlatformIntegration::hasCapability(cap);
 208     }
 209 }
 210
 211 QAbstractEventDispatcher *QXcbIntegration::guiThreadEventDispatcher() const
 212 {
 213     return m_eventDispatcher;
 214 }
 215
 216 void QXcbIntegration::moveToScreen(QWindow *window, int screen)
 217 {
 218     Q_UNUSED(window);
 219     Q_UNUSED(screen);
 220 }
 221
 222 QPlatformFontDatabase *QXcbIntegration::fontDatabase() const
 223 {
 224     return m_fontDatabase.data();
 225 }
 226
 227 QPlatformNativeInterface * QXcbIntegration::nativeInterface() const
 228 {
 229     return m_nativeInterface.data();
 230 }
 231
 232 #ifndef QT_NO_CLIPBOARD
 233 QPlatformClipboard *QXcbIntegration::clipboard() const
 234 {
 235     return m_connections.at(0)->clipboard();
 236 }
 237 #endif
 238
 239 #ifndef QT_NO_DRAGANDDROP
 240 QPlatformDrag *QXcbIntegration::drag() const
 241 {
 242     return m_connections.at(0)->drag();
 243 }
 244 #endif
 245
 246 QPlatformInputContext *QXcbIntegration::inputContext() const
 247 {
 248     return m_inputContext.data();
 249 }
 250
 251 #ifndef QT_NO_ACCESSIBILITY
 252 QPlatformAccessibility *QXcbIntegration::accessibility() const
 253 {
 254     return m_accessibility.data();
 255 }
 256 #endif
 257
 258 QPlatformServices *QXcbIntegration::services() const
 259 {
 260     return m_services.data();
 261 }
 262
 263 Qt::KeyboardModifiers QXcbIntegration::queryKeyboardModifiers() const
 264 {
 265     int keybMask = 0;
 266     QXcbConnection* conn = m_connections.at(0);
 267     QXcbCursor::queryPointer(conn->xcb_connection(), 0, 0, &keybMask);
 268     return conn->keyboard()->translateModifiers(keybMask);
 269 }
 270
 271 QStringList QXcbIntegration::themeNames() const
 272 {
 273     return QGenericUnixTheme::themeNames();
 274 }
 275
 276 QPlatformTheme *QXcbIntegration::createPlatformTheme(const QString &name) const
 277 {
 278     return QGenericUnixTheme::createUnixTheme(name);
 279 }
 280
 281 QT_END_NAMESPACE